// This is the method that the MailManager will call
// when a new e-mail message arrives
private void SendMsgToPager(Object sender, NewMailEventArgs e)
{
// 'sender' identifies the MailManager in case we want to communicate back to it.
// 'e' identifies the additional event information that the MailManager wants to give us.
// Normally, the code here would send the e-mail message to a pager.
// This test implementation displays the info on the console
Console.WriteLine("Sending mail message to pager:");
Console.WriteLine(" From={0}, To={1}, Subject={2}", e.From, e.To, e.Subject);
}
// Step #4: Define a method that translates the
// input into the desired event
public void SimulateNewMail(String from, String to, String subject)
{
// Construct an object to hold the information we wish
// to pass to the receivers of our notification
NewMailEventArgs e = new NewMailEventArgs(from, to, subject);
// Call our virtual method notifying our object that the event
// occurred. If no type overrides this method, our object will
// notify all the objects that registered interest in the event
OnNewMail(e);
}
// This is the method the MailManager will call
// when a new e-mail message arrives
private void FaxMsg(Object sender, NewMailEventArgs e)
{
// 'sender' identifies the MailManager object in case
// we want to communicate back to it.
// 'e' identifies the additional event information
// the MailManager wants to give us.
// Normally, the code here would fax the e-mail message.
// This test implementation displays the info in the console
Console.WriteLine("Faxing mail message:");
Console.WriteLine(" From={0}, To={1}, Subject={2}",
e.From, e.To, e.Subject);
}
// Step #3: Define a method responsible for raising the event
// to notify registered objects that the event has occurred
// If this class is sealed, make this method private and nonvirtual
protected virtual void OnNewMail(NewMailEventArgs e)
{
// Copy a reference to the delegate field now into a temporary field for thread safety
//e.Raise(this, ref m_NewMail);
#if CompilerImplementedEventMethods
EventHandler <NewMailEventArgs> temp = Volatile.Read(ref NewMail);
#else
EventHandler <NewMailEventArgs> temp = Volatile.Read(ref m_NewMail);
#endif
// If any methods registered interest with our event, notify them
if (temp != null)
{
temp(this, e);
}
}